Aeroplane



H. J. N ELSON AEROPLANE Ju ly l2 1927. 1,635,897

Filed Dec. 2:5 1925 sheets-sheet 1 INVENIOR WITNESS:

H. J. NELsoN AEROPLANE Filed Dec. 23. 1925 3 Sheets-Sheet 2 I zo 3i Je 1 1,635,897 July 12, 1927. H J. NELSCN n y AEROPLANE- Filed De.'2`e 19254 5 sheets-sheet 3 Patented July v12, 41927.

UNITED vSTATI-:s

HANS JULIUS NELSON, F PALO ALTO, CALIFORNIA..

milionaria.l

Application med December 23, 1925. Serial No. 77,308.

planes or of gas receptacles of suflcient size for raising a hea load, and to restrict the size of the machine to the dimension required for carrying the driving mechanism and-the quantity of freight or the number of passengers to be transported, reliance beingplaced for lifting purposes largely on the vspeed of the lifting propellers, rather than upon extent of wing surface, or upon the buoyancy of gas filled containers. n

A further object is to provide for the control of individual motors for the several propellers, so that the speed thereof may be ventirely within the control of the pilot, thus Apermitting him lto handle the machine'm the manner desired, the compact construction reducing the effect which dangerous air currents have upon the machine having a greater extent of surface exposed.

lVith the foregoing and other objects in view, the invention consists in the novel construction and arrangement of elements described, illustrated and claimed, it being understood that modifications may be made within the sco e of the claim, withoutvdepartin from't e spirit of the invention.

In te drawings forming part of this application,

Figure 1 shows the machine in side elevation.

Figure 2 is a top' plan view. Figure 3 is a view in longitudinal section, on the line 3-3 of Figure 2. Figure 4 is a vertical transverse section on the line 4-4 of Figure 1.

Figure 5 is a conventional showing of a portion of the driving means. p

Figure 6 isa diagrammatic view showing the switches for' controlling the individual motors, and the circuit connected with said switches'.

The main portion of the machine, designated 10, includes a cabin 11, accessible throufgh door 12, and a pilot house 13 is suporte by a structure inc uding vertical members 14 and 15 and an upper transverse meml5 ber or truss 16.

'to the motors is design A. plane 18 includes -laterally extending members 18 and 18, braced by trusses 19 and 20. Other trusses 21' and 22 extend from the outer portions of the plane to the main structure at the points 23 and 24.

The runners 25 are mounted by means of vertical elements, such as 26 and middle braces 27, other braces, such as 28 serving an obvious purpose.

A rudder 30 is provided, and may be 65 controlled by any suitable means, but the propellers 32 and 33 may be controlled, individually, in such manner that the use of the vertical rudder 3() willnot be required, or will not usually be required.

rl `he driving and elevating' mechanism, and the control thereof includes some of the most im ortant features of the construction, and a orward propeller 35 is carried by a shaft 36 driven by a motor, shown con- 75 ventionally at 37, this. being an electric motor, as are also the motors for the several other propellers to be described.

Lifting propellers are designated 38 and 39, and are mounted res ectively on shafts A40 and 41 coupled direct y to the armature shafts of motors 42 and 43.y Figure 3 shows one of the motors for the propellers shown in Figure 2 as being mounted in advance of the rudder. Figure 6 shows both of these motors conventionally, and they are deS- ignated in that view, by reference characters 44 and 45.

A generator for supplying electric current ated 47, and maybe driven by motor 48, a fly wheel of the direct coupled shaft, being designated 49.

One of the leads from the generator 47, is `designated A50 and leads tothe pivotal points of switch blades 51, 52, 53, 54, 55,

- the other lead `being designated 56 and having connection with, a wire 57 leadin to corresponding terminals motors 37 an 42. Leads 56 also have connection with corresponding terminals of motors 43 and 44, by means of wires 58 and 59, and with motor 45 by meansof wire 60.

A starting resistance R is associated with each switch blade, and each of these resistances is connected with that terminal of the respective motor, opposite to that above mentionedthis connection is eected by means of wires 51', 52', 53', 54', 55'.

It will be understood therefore, that the motors, and the speed thereof, may be conn ments supporting the pilot house, guiding propellers independently controlled and having their axes of rotation in alinement, transversely of the body portion and on op'- posite 'sides thereof, and braces extending from the upper portion' of the pilot house to the surface of the plane', at the end portions thereof.

HANS JULIUS NELSON. 

